MAINTAINERS: SOFTWARE RAID: Add Yu Kuai as Reviewer

Add Yu Kuai as reviewer for md/raid subsystem.

Signed-off-by: Song Liu <[email protected]>
Acked-by: Yu Kuai <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: liu-song-6

MAINTAINERS

@@ -20106,6 +20106,7 @@ F:	include/linux/property.h
 
 SOFTWARE RAID (Multiple Disks) SUPPORT
 M:	Song Liu <[email protected]>
+R:	Yu Kuai <[email protected]>
 L:	[email protected]
 S:	Supported
 Q:	https://patchwork.kernel.org/project/linux-raid/list/